ABSTRACT

In this study, solubility and physic-chemical properties of sodium dihydrogen phosphate in sodium chloride, phosphoric acid and their mixture solutions at T = (298.15 and 313.15) K have been investigated by using isothermal dissolution method. In the three systems, the solubility of NaH2PO4 always increases with the temperature increasing and decreases with molar concentration of phosphoric acid (sodium chloride) increasing because of the same ion effect. Solubility data of sodium dihydrogen phosphate in the mixed solution of sodium chloride and phosphoric acid is basically required for designing and optimizing the solvent extraction process in the industrial production.

Compounds

#	Formula	Name
1	H2O	water
2	H2NaO4P	sodium dihydrogen phosphate
3	ClNa	sodium chloride
4	H3O4P	phosphoric acid

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2 4 1	Ratio of amount of solute to mass of solution, mol/kg - 2 ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	gravimetric method	18
POMD	2 4 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	18
POMD	2 4 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	18
POMD	2 4 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	18
POMD	2 3 1	Ratio of amount of solute to mass of solution, mol/kg - 2 ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid Crystal of intercomponent compound 1	gravimetric method	16
POMD	2 3 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	16
POMD	2 3 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	16
POMD	2 3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Ratio of amount of solute to mass of solution, mol/kg - 2; Liquid Ratio of amount of solute to mass of solution, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	16

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubility and physic-chemical properties of NaH2PO4 in phosphoric acid, sodium chloride and their mixture solutions at T = (298.15 and 313.15) K

Zhang, X.[Xiaorui], Liu, C.[Chengqi], Shen, W.[Wei], Ren, Y.[Yongsheng], Li, D.[Danyang], Yang, H.[Huiling]

ABSTRACT